Dustproof hinge



Sepf.'4,192s. `1,683,272- lM. TUCKER nUsTPRoon HINGEA Filed May 9, 1927 -2 Sheets-sheet' 1 FIG I F1a@ Sept. 4, 192s. Y 1,633,272 -M. TUCKER y DUSTPROOF HINGE Fdiled May 9, 1927; 2 Sheets-sheet 2 .um \n FIG. 8

Patented `4Sept. 4,I 192%l v 'f UNITE STATS 1 PATENT" meer Y Hormon roma, orrmnmnnrnra, .rnnns'rnvema l nusrrnoor man.

Application 'filed May 9, 192'?. Serial 1K0. loi.

A further' object of method of producing a dust-proof hinge butt by rst drop-:forging a blank having a hookshap'ed extension at one end thereof rovided .with integrally formed inclined si e walls, -60 thenfforming this drop-forging such that the hook-shaped' extension forms a covering hood for the hinge pin, and finally coining This invention relates to hinge butts and the invention is' the more particularly to the method or rocess employed inthe formation or mann acture of female hinge butts oi the type shown and described in my copending application, Serial No. 151,385, led November 29, 1926.

Heretofore and prior to this invention it has been the common practice to form these y 'female hinge members either ot, pressed metal stampings or of castings Where these members 'were formed oi pressed metal stampings they had the disadvantage of not being oh sucient strength and rigidity to Withstand'the more or less severe strains and stresses .to which they were subjected when in use, and to overcome this ,serious disadvantage resort has-been had tovarious orms the side Walls ofthe hood so that their 'inner surfaces Will 'be spaced apart 'the'eract rete quired distance to constitute bearings for the hinge pin upon which is mounted the other butt member of the hingeD A-still further object ofthe invention is vvhi h is strong, rigid and durable and which is provided `with a curved hood at one end' thed of producing a emal hinge hatt 'to and arrangements oi reinforcing and bracing expedients, these latter being often in the nature of elements separately secured to the sheet metai stampings. W here the hinge butts were made oi ast metal it was exceedingly dicult, iii not altogether irnpossi-` ble,'to cast aifemale butt oi thetype disclosed f' and claimed in said copending vapplicationabove referred to without leavlng the bearing portion of the butt opento-such extent lthat dust and other foreign material readily found its v /ay into the hinge joint, @bviouslyl thereof for protecting the joint aga .1.' the entry of grit, dust or other `foreign material thereinto.` 7@ Other objects, and objects relating to d 1 tails of economy and construction will. appear more fully hereinanterC The invention consists substantially in constructing, combining, locating and relaf 8@ tively arranging the parts, ali as will he more fullyhereinafter' set `forth, as shown in the accompanying drawings, and nallylpointsdf -f' out in the appended claims.,

30 where it was necessary to resort to a mul- 'in the vaccempanying drawings---.=x tiplicity oi parts in a single hinge memleelll ignre l isa' side view of the initially-.drop

order to' secure the requisite strength and itorged'blankg' I rigidit for withstanding the strains and Figure 2 is, a. plan vie-vv thereof@ stresse to which the member was subjected' AFigure' 3 is ari-end View thereof i in when use the cost ot manufacture was conthe 'direction of the. arrows 't-d. o i?:inre et) siderahly increased and the time consumed l, a portion of the blanlr'lceingshovvn'in eee in assembling these parts Waseacessive. @n tion'l the other hand', vvherethebutt member was Figure .d 'is a side elevation of' the ianlr made in the lforni ofacasting, it fwasneces.- after ithas'lgeen straightened into normal L f es. i

40 sary to nish the inner surfaces ofthe bearshape;- Y f *s ing portion of the member, this being a rela- Fi re 5. is laffplan view ofthe straigigjginA tively expensive and time-consuming operacned tank; f J- f tion at the same time that it 'was practically j Figure 6 isl an @Dld VBW omg mlb@ i. 'i'

in ipossihle to provide an adequate integrally rection of the .arrows ot' Figure da v 45 formed coveringtor the hinge pin. arranged Figure''i va`sidevievv oie the completed' l to eiliectually preclude any possibility ofdirth' e bnttg-rj 4 or grit entering into the joint andso causing S is@ Plan .view U- premature wear-between the parts thereof.'

' ft is'accordingly .50 invention to'obviate the aforementioned ob'- j 10 is' aperspeeaien ghgmm- 'j ec ions'and'diculties by theprovision of'fplef hinge; v

a methpd orftorming the female hinge butt, Rfel-rmg td the {hm-in- .mrepa-. of a dustlpro'oihinge which'consistsin ini-,. f'tioularly t6liggllrest, @ii-wilt @geen Orgels ,.55 ing p orgedblanl; intoina-l shapel-emalehingefbutts I tiallydro 'si-blank and finally press# that' theffrst step in th methodoproducin is 'to dropforgea u 10 into the shape' shown in these figures, the blank so formed consisting of a leaf 11 having a hook-shaped'exte'nsion 12 at one end thereof. This hook-shaped extension extends substantially across the entire width of the blank `l and .when initially formed is arranged with its mouth 13 presenting upwardly and at right angles to the plane of the leaf 11. At'opposite sides of this curved extension 12 are, integrally formed side walls 14, these latter being inclined outwardly and upwardly .with respect to one another to'provide the necessary clearance or draft for the drop-forg ing die or hammer. As is most clearly shown in Figure 2 the curved portion 12 lies wholly below the plane of the leaf portion 11, and it will further be seen that the Side Walls 14,v

which are of substantially circular formation, have the greater portions of their peripheries joined integrally to the curved extension 12. The side walls 12 are preferably of greater thickness than is the leaf 11, and the curved extension 12 gradually decreases in thickness from its line of connection with' the leaf 11 to its outer free edge 15.

After theblank has been so formed, it is subjected to the next operation'wherein the hook-shaped extension 12 is bent upwardly in such manner that its mouth 13 presents fol'-V wardly and in a direction substantially paralleling the plane of the' leaf 11, the resultant,

product belng shown most clearly in Figures 4, 5, and 6. It will be seen that as a result of this last operation the hook-shaped extension 12 will have been shifted from a position below the plane of the leaf 11 to a position above said plane.

The partially completed butt shown in Figures 4-6 is then subjected to an operation for' coining the side walls 14 so that their inner surfaces will be spaced apart the exact required distance. This coining operation is carried out by placing the butt in a suitable coming press having an anvil or gauge of a length equal to the desired distance between the inner surfaces of the walls .14, these latter v being positioned one either side of the anvil. The coining dies are then operated to force the walls 14 inwardly and toward the sides of the anvil until the walls are straight and in substantial parallelism with respect to each other. This coning or straightening of the side walls 14 accurately spaces them to snugly accommodate the companion or male hinge b utt 16 (s ee Fig. 10) therebetween, the neces.- s1t for finishing the inner surfaces 17 of the si e walls 14 being entirely eliminated Vwith the result that considerable time, labor and expense are saved in the manufacture of these female butt members. In fact, as has already been pointed out, it is almost impossible to properly and conveniently inishthe interior surfaces of the hook-shaped extension 12, especially when the latter is of the form shown in Figures 4 and 7 having ,its free edge lying well to one side of the vertical plane of the hinge pin axis. s

After the side walls 14 have been coined to proper position, the outer surfaces thereof together with the edges 18 of the leaf 11u may be. finished in any suitable manner, as for instance, by grinding. 'The holes 19 may then be drilled or otherwise formed in the side Walls, these holes bein in axial alignment and 'of a diameter su cient to snugly accommodate therein the opposite ends of the s hinge pin 20. The holes 21 in the leaf 11 may also be drilled and countersunk if necessary.

The male .butt member 16, which forms no part of the present invention, is provided with a transversely bored'head to be received within the curved extension 12 of the female butt member 10 so that the hin e pin 20 mayv beprojected therethrough. T e integrally formed side walls 14 overlie and conceal the'ends of the head 23, while the ,curved hood'portion of the extension 12 overlies and conceals approximately threefourths of the cylindrical surface of said head as well as the j oints between the ends of the head and the inner surfaces of the side walls 14. The free edge 15 of this hood or cover portion acts as a stop to limit the opening movement of the hinge.

It will be apparent to those skilled in the art that by the method just described it is posslble to provide a female hinge butt member which is not only exceedingly strong, thereby reducin the possibility of its being thrown out o alignment or otherwise damaged, but which also may be constructed inexpensively and in one piece, even though the member be of the fully enclosed type.

It is to be understood of course that various changes and modificationsmay be had `from time to time without departing from the real spirit of this invention and it is ac- 23 arranged cordin ly intended that the appended claims e invention broadly, as well as speciffacturing the female butt of a dust proof hinge, which consists in producin in o ne operation a drop-forged blank inc uding a curved portion at one end thereof having diverging side enclosures, and then straightening sald enclosures into substantial parallelism. y

2.- The herein described process of manufacturing a hinge butt, which consists in initially and in one operation shaping a blank such that its longitudinal sectlon is in the Y form of a hook, the opposite sides of the curved portion of the hook being provided in said initial operation with diver g walls, and then pressing said walls outof ivergence and into substantial parallelism.

3. The herein described methodV of manufacturing a hinge butt, which consists in iniaeeaava tially and in one direction drop-forging -a blank in the form of 'a leaf having a curved extension at one end thereof, said extension lying below the plane of said leaf and being provided in said operation with diverging side walls, then bending said extension such that it lies above said plane, and then coining l said side walls to remove the divergence therehinge, w ich consists in drop-forging a Walls inwardly and into lsubstantial parallelism with respect to each other. y

v 5. The herein described method of manufacturinga dustproof-hin'ge butt, whlch consists in initially and simultaneously dropforging a blank to form a curved extension at one end thereof having diverging side enclosing, Walls and subsequently coining .said inclined side walls to the exact gauge deslred.

6. Theherein described method of manufacturing ,a female hinge butt, which consists in forming inI one operation, a blank having a hookshaped extension at one end thereof provided wlth diverging side enclosing walls, and then, in a subsequent operation, coming said walls into parallelism.

7. The herein described method of manufacturin the female butt of a dust lank to produce in one operation, a leaf including at one end thereof a. transverse depression provided with diverging side enclosing walls,y

and then coining said walls to remove the diver ence to brmgthem to proper gauge.

' 8.l he herein described method of manufactlring a hinge butt, `which consists in initially and in one operation drop-forging a blank in the form of a .leaf havin a hookshaped extension `at-one end thereo said extension being` provided insaid operation with side-enclosing walls andA being. further presented upwer y and at proof'- right angles to the plane of said leaf, and subsequently bending said extension suchthat it presents' towar the free end of said leaf and in substantial parallelism with said plane.

9. The herein described method of manufacturling a hinge butt, which consists in initially and in one operation forming a blank having a leaf and a curved portion extendin transversely across one end thereof, sai curved portion being initially presented upwardly and at right angles to said leaf and being provided in 'said initial` operation with diverging side-enclosing walls, then straightening said blank such that said curved portion presents itselfin a direction paralleling saidleaf, and inallycoining said side walls tb the exact gauge required. L i

10. The herein described method of manufacturing a hinge butt, which consists in ini.- tially .and in one operation drop-forging a blank to form a leaf having a transverse de- .y

pression at one end thereof presenting upwardly and at rigd t an les to said leaf, sa1d depression being itialy provided in said 4operation with oppositely inclined side walls, then straightening said blank such that the depression presents in a direction paralleling said leaf, then removing the divergence between. the side walls, and `nally forming apertures in said walls for accommodating the ends of a hinge pin. v

11. The herein described method of manufacturing a -female hinge butt which con-l sists in initially and in one operation producing a drop-forged blank comprising a leaf and a transversely extendin curved ortion including diver g side-enc osing Wa s, said curved portion eing of gradually decreasing rthickness toward its outer free end and sai free end being spaced from that part ofl the, curved portion which is of greatest thickness whereby to form a mouth presenting upwardly and at right angles to said leaf, then bending said leaf with respectto said curved portion until the mouth of the latter faces ina directionl paralleling said leaf, and then coining said side-enclosm walls to remove their divergence and establish them in substantial parallelism. p 1

In testimony whereof, I have hereunto affixed my signature.

' MORTON TUCKER. 

